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Chinese Journal of Applied Ecology ›› 2000, Vol. ›› Issue (4): 497-500.

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Stable carbon isotope characteristics of some woody plants in warm temperate zone

HAN Xingguo1, YAN Changrong1, CHEN Lingzhi1, MEI Xurong2   

  1. 1. Institute of Botany, Chinese Academy of Sciences, Beijing 100093;
    2. Institute of Agrometeorology, Chinese Academy of Agricultural Sciences, Beijing 100081
  • Received:1998-10-20 Revised:1999-08-27 Online:2000-07-25

Abstract: It was found that the δ13C values of the foliar,trunk,flower,and fruit of some woody plants in broad leaved forest in warm temperate zone were affected by many factors,and showed a great interspecific difference and temporal and spatial heterogeneity.The intraspecific variation of δ13C values was also great,with the order of Vitex negundo var. heterophylla 6.549‰(-22.226‰~-28.775‰), Fraxinus rhynchophylla 5.706‰(-23.687‰~-29.393‰), Jugans mandshurica 5.229‰(-26.146‰~31.375‰), Quercus liaotungensis 3.333‰(-24.324‰~ -27.657 ‰), Syringa pekinensis 2.414‰(-25.655‰~-28.070‰),and Prunus armeniaca var. ansu 2.296‰(-23.436‰~-26.432‰).Different organs of the same species had different δ13C values:trunk and root barks had the low, while xylem had the highest δ13C value.According to the relationship analysis between δ13C value of Prunus armeniaca var. ansu xylem and environment factors,it was found that δ13C value was strongly affected by annual mean temperature and followed by annual precipitation,mean temperature and precipitation in growth season.